1 >>> format(x, 'e') #指定为科学计数法 2 '1.234568e+03' 3 >>> format(x, '0.2E') #指定科学计数法和小数表达式的小数位数 4 '1.23E+03' 5 >>> 同时指定宽度和精度的一般形式是 '[<>^]?width[,]?(.digits)?', 其中 width 和digits 为整数,?代表可选部分。 同样的格式也被用在字符串...
Precision allows us to define the number of digits to be shown after a decimal point. For example, # set precision to 2 for floating-point numberprecision_value = format(123.4567,'.2f') print(precision_value)# Output: 123.46 Run Code Here,.2fmeans two digits will be shown after the deci...
4. Formatting strings String objects have a built-in functionality to make format changes, which also include an additional way of concatenating strings. Let’s take a look at it: In the example above, I generated a new string based on the input values of two already-created variables by u...
round(number[, ndigits]) 参数: number - 这是一个数字表达式。 ndigits - 表示从小数点到最后四舍五入的位数。默认值为0。返回值该方法返回x的小数点舍入为n位数后的值。 round()函数只有一个参数,不指定位数的时候,返回一个整数,而且是最靠近的整数,类似于四舍五入 当指定取舍的小数点位数的时候,一般...
但round函数有坑,在Python3.5的文档中:“values are rounded to the closest multiple of 10 to the power minus ndigits; if two multiples are equally close, rounding is done toward the even choice.”,意为:“保留值将保留到离上一位更近的一端(四舍六入),如果距离两端一样远,则会保留到偶数的一端...
'Hello' a, b, c = 1.12345, 2.34567, 34.5678 digits = 2 print('{0}! {1:.{n}f}, {2:.{n}f}, {3:.{n}f}'.format(s, a, b, c, n=digits)) #输出:Hello! 1.12 2.35, 34.57 命名符 格式串可以包含命名占位符,这些占位符通过使用关键字参数进行格式转化,先看下面的例子: #使用...
如果只是对一个单独的数值做格式化输出的话我们使用内建的format()函数即可 x=1234.56789 ##Two decimal places of accuracy format(x,'0.2f') ##Right justified in 10 chars,one-digit accuracy format(x,'>10.1f') ##Left justified format(x,'<10.1f') ...
closestmultipleof10tothepowerminusndigits;iftwomultiplesareequally close,roundingisdonetowardtheevenchoice(so,forexample,bothround(0.5)andround(-0.5)are0,andround(1.5)is2).round(2.5)2 round(1.5)2 round(2.675)3 round(2.675,2)2.67 round()如果只有一个数作为参数，不指定位数...
{}'.format(a, b, a * b))print('{} / {} = {:.2f}'.format(a, b, a / b)) # limits it to two digits after decimalprint('{} % {} = {}'.format(a, b, a % b))print('{} // {} = {}'.format(a, b, a // b))print('{} ** {} = {}'.format(a, b, a ...
Do let me know if you still have questions in the comments below. You may also like: Check if a Variable is a Number in Python Find Sum of Two Numbers without Using Arithmetic Operators in Python How to Find Sum of Even Digits in a Number in Python Add Complex Numbers in Python...